CN115625868A - Butterfly-shaped optical cable apparatus for producing - Google Patents

Abstract

The invention relates to the field of optical cable production, in particular to a butterfly-shaped optical cable production device which comprises a pay-off mechanism, an extrusion mechanism, a cooling and drying mechanism and a traction device which are sequentially arranged, wherein the extrusion mechanism comprises an extruder and an extrusion die, and the extrusion die is arranged at the head of the extruder; the extrusion die comprises an outer die and a die core, the section of the rear end of the die core is rectangular, the front end of the die core is wedge-shaped, a plurality of groups of wire outlet holes are arranged on the end face of one wedge-shaped end of the die core along the axial direction of the die core in a penetrating manner, the outer die is coaxially arranged at the front end of the die core, the wedge-shaped hole is arranged at one end of the outer die, a plurality of extrusion holes are arranged at the bottom of the wedge-shaped hole corresponding to the plurality of groups of wire outlet holes, and an extrusion control device is also arranged in the extrusion die and can control the number of butterfly-shaped optical cables simultaneously produced by the device.

Description

A Butterfly Optical Cable Production Device

technical field

The invention relates to the field of optical cable production, in particular to a butterfly optical cable production device.

Background technique

Butterfly optical cable is currently the most used access optical cable, and plays a huge role in networks such as fiber-optic entry, intelligent buildings, digital communities, campus networks, and local area networks. The cross-section of the butterfly optical cable is butterfly-shaped, and the optical fiber is located in the butterfly At the geometric center, two metallic or non-metallic strength members are arranged symmetrically on both sides of the optical fiber, and the outside of the optical fiber and the strength member is wrapped by a sheath material.

In the production process of the butterfly optical cable, the optical fiber and the strength member of the butterfly optical cable are usually arranged and then passed through the extruder. The extruder extrudes the sheath material and wraps it on the optical fiber and the strength member. Most of the optical cable production equipment can only produce one optical cable at the same time on one production line. It is necessary to increase the production line or replace the extrusion die, which increases the production cost, and most of the extrusion dies that can extrude multiple butterfly optical cables at the same time cannot Adjust the number of butterfly cables to be extruded, so that the production speed cannot be adjusted flexibly; the current extrusion die usually includes an outer mold and a core. The conical flow channel, the optical fiber and the strengthening member pass through the hole in the center of the outer mold and the core, the sheath material flows to the optical fiber and the strengthening member through the conical flow channel, and finally extruded through the hole on the outer mold, during the extrusion process In the process, because the flow channel is conical, the sheath material will form a pressure toward the optical fiber when the sheath material is extruded out of the outer mold together with the optical fiber and the strength member because the fiber is blocked on the side of the strength member. The direction of the optical fiber is displaced, which affects the production quality of the butterfly optical cable, and even presses the strength member until it touches the outer mold, which accelerates the wear of the hole on the outer mold.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art and provide a butterfly cable production device.

The purpose of the present invention is achieved through the following technical solutions: a butterfly cable production device, which includes a pay-off mechanism, an extrusion mechanism, a cooling and drying mechanism and a pulling device arranged in sequence, the extrusion The mechanism includes an extruder and an extrusion die, and the extrusion die is arranged at the head of the extruder;

The extrusion die includes an outer mold and a mold core. The mold core is provided with multiple sets of outlet holes axially penetrating the mold core along the central axis. The outlet holes are arranged horizontally. One end of the outer mold is provided with an opening. One end of the outlet hole of the mold core is set in the opening, and the outer mold is provided with a plurality of extrusion holes corresponding to multiple groups of the outlet holes, and there is a gap between the extrusion holes and the outlet holes ; The extrusion die also includes an extrusion control device, the extrusion control device includes a sealing block and a screw, and a sealing block movable hole is arranged on both sides of the outer mold, and the sealing block movable hole is connected to the sealing block. The extrusion holes are located on the same horizontal plane and are perpendicular to each other. The movable hole of the sealing block is connected to the gap between the outlet hole and the extrusion hole. The two sealing blocks are respectively slidably arranged in the two movable holes of the sealing block. Among them, one end of the sealing block is rotatably connected to the screw, and the screw is threadedly connected to the opening of the movable hole of the sealing block. One end of the screw is provided with a hand wheel, and by turning the screw, the sealing block is Pressed into the opening, the sealing block will seal the extrusion hole and the outlet hole, so that the device can control the number of butterfly optical cables produced at the same time.

Specifically, the cross-section of the mold core is rectangular, one end of the mold core is wedge-shaped with a thinner upper and lower thickness, the opening on the outer mold is a wedge-shaped hole, and the upper and lower surfaces of the wedge-shaped end of the mold core are in contact with the The upper and lower surfaces of the opening cooperate to form two flow channels, and the two flow channels meet in the gap between the outlet hole and the extrusion hole, and a feed port is provided on one side of the outer mold, and the feed The mouth is connected to the two flow channels, and the upper and lower flow channels balance the pressure on the reinforcement, avoiding the displacement of the reinforcement to the optical fiber, improving the production quality, and preventing the reinforcement from contacting the extrusion hole wall and wearing the extrusion hole.

Specifically, a set of the outlet holes includes two holes for the strength member and an optical fiber hole arranged at the center of the two strength members, and the outlet holes arrange and position the strength member and the optical fiber neatly.

Specifically, the angle between the flow channel and the outlet hole is 25°~45°, and an acute angle is formed between the flow channel and the outlet hole to increase the pressure at the outlet hole, so that the device can meet the requirements of simultaneous production of multiple Butterfly cable.

Specifically, the pay-off mechanism includes a pay-off roller bracket and a pay-off roller. The two pay-off rollers are arranged up and down in rolling contact and are rotatably arranged on the pay-off roller bracket. The two pay-off rollers roll The contact point is located at the same level as the wire outlet hole, and multiple sets of positioning grooves are provided on the pay-off roller, and the positioning grooves enable the reinforcement member and the optical fiber to be positioned before entering the mold core.

Specifically, the positioning grooves include two positioning grooves for strength members and an optical fiber positioning groove between the two positioning grooves for strength members, so that the strength members and optical fibers are neatly arranged before entering the extrusion die.

Specifically, the cooling and drying mechanism includes a cooling shower head, a water pipe, a water tank, and a drying mechanism. A plurality of the water pipes are connected to the bottom of the water tank and span the top of the water tank, and each of the water pipes spans the A spray head is connected to the top of the water tank, and the spray head sprays cooling water to the extruded butterfly-shaped optical cable to cool and shape the extruded butterfly-shaped optical cable.

Specifically, the drying mechanism includes a drying box, a fan, and a heating pipe. The drying box is arranged at the tail end of the water tank. Both ends of the drying box are provided with wire holes. The drying box A heating pipe is arranged inside, fans are arranged on both sides of the drying box, and the fans communicate with the inside and outside of the drying box, and the drying mechanism dries the remaining cooling water on the cooled butterfly optical cable.

Specifically, the traction device includes an upper conveyor belt and a lower conveyor belt. The bottom surface of the upper conveyor belt is attached to the top surface of the lower conveyor belt. The traction groove, the traction device pulls the butterfly optical cable while applying tension to the butterfly optical cable, so that the butterfly optical cable remains tight and does not deform during the extrusion process.

Specifically, it also includes an online drying device, which is arranged before the pay-off mechanism to dry the optical fiber and the strength member before the cable is extruded, which includes two heating plates and a heating plate support, The heating plate is arranged on the support, the two heating plates are arranged horizontally, there is a gap between the two heating plates, and the gap between the two heating plates is on the same level as the outlet hole, In order to prevent the optical fiber from being damp due to being placed for too long, which will cause the fiber and the sheath to be bonded weakly, and cause the optical fiber to shrink when the butterfly cable is bent, the optical fiber is pre-dried before extrusion.

The present invention has the following advantages:

1. By setting the extrusion control device on the outer mold, the sealing block in the control device can move in the movable hole of the sealing block of the outer mold. After the sealing block moves, the outlet hole and the extrusion hole can be closed to control the outlet hole and the extrusion hole at the same time. The number of jobs, in order to control the number of butterfly cables produced at the same time.

2. By setting up and down two oblique advection channels in the extrusion die, the reinforcement can be evenly stressed when the sheath material is extruded, avoiding radial displacement of the reinforcement, and improving the quality of the butterfly cable. And the wear of the mold is reduced, and by setting multiple groups of outlet holes and multiple extrusion holes on the mold core and the outer mold, the device can simultaneously extrude and produce multiple butterfly optical cables.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is an enlarged view of A in Figure 1;

Figure 3 is an enlarged view of B in Figure 1;

Figure 4 is an enlarged view of C in Figure 1;

Fig. 5 is a structural schematic diagram of the pay-off mechanism of the present invention;

Figure 6 is an enlarged view at D in Figure 5;

Fig. 7 is an exploded view of an extrusion die of the present invention;

Fig. 8 is a schematic cross-sectional view of an extrusion die of the present invention;

Fig. 9 is a schematic cross-sectional view of an extrusion die of the present invention;

Figure 10 is an enlarged view at D in Figure 9;

Figure 11 is an enlarged view at E in Figure 9;

Figure 12 is a schematic diagram of the internal structure of the drying mechanism of the present invention;

In the figure: 1. On-line drying device; 2. Pay-off mechanism; 3. Extrusion mold; 4. Extruder; 5. Cooling mechanism; 6. Drying mechanism; 7. Traction device; 11. Heating plate; 12. Heating plate bracket; 21. Pay-off roller bracket; 22. Pay-off roller; 23. Drive motor for pay-off roller; 24. Positioning groove; 32, mold core; 33, opening; 34, feed port; 35, sealing block; 351, movable hole of sealing block; 36, screw; 37, hand wheel; 38, runner; 39, extrusion hole,; 310 , outlet hole; 3101, optical fiber hole; 3102, reinforcement hole; 51, sink; 52, water pipe; 53, sprinkler head; 61, drying box; 62, cable hole; 63, fan; 64, heating pipe; 71, traction device installation frame; 72, conveyor belt; 73, conveyor belt driving motor; 74, traction groove.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that relative terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed other elements of, or also include elements inherent in, such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

As shown in Figures 1-4, the butterfly cable production device includes a pay-off mechanism 2, an extrusion mechanism, a cooling and drying mechanism 6 and a traction device 7 arranged in sequence, and the extrusion mechanism includes an extruder 4 and an extruder. Out of the die 3, the extrusion die 3 is arranged at the head of the extruder 4;

The extrusion die 3 includes an outer mold 31 and a mold core 32. The mold core 32 is provided with multiple sets of outlet holes 310 axially penetrating the mold core 32 along the central axis. The outlet holes 310 are arranged horizontally. One end of the mold 31 is provided with an opening 33, one end of the outlet hole 310 of the mold core 32 is arranged in the opening 33, and the outer mold 31 is provided with a plurality of extrusion holes 39 corresponding to multiple groups of the outlet holes 310. , there is a gap between the extrusion hole 39 and the outlet hole 310; the extrusion die 3 also includes an extrusion control device, the extrusion control device includes a sealing block 35 and a screw 36, and the outer mold 31, a sealing block movable hole 351 is provided on both sides, the sealing block movable hole 351 and the extrusion hole 39 are located on the same horizontal plane and are perpendicular to each other, and the sealing block movable hole 351 communicates with the outlet hole 310 and Out of the gap between the holes 39, the two sealing blocks 35 are respectively slidably arranged in the two movable holes 351 of the sealing blocks, and one end of the sealing block 35 is rotatably connected with the screw rod 36, and the screw rod 36 Be positioned at the orifice place place on the side wall of outer mold 31 with described sealing block active hole 351 threaded connection, described screw rod 36 is positioned at one end outside outer mold 31 and is provided with hand wheel 37, and two sealing blocks 35 can be rotated by screw rod 36 Slide in the gap between the outlet hole 310 and the extrusion hole 39 and can block the outlet hole 310 and the extrusion hole 39, the mold core 32 and the outer mold 31 are all made of tungsten steel, and the sealing block 35 is made of stainless steel. Before starting production, first rotate the screw rod 36, adjust the position of the sealing block 35, block the unnecessary outlet hole 310 and the extrusion hole 39, and then start production, and the optical fiber and the reinforcing member pass through the unblocked extrusion hole 39 and In the outlet hole 310, it is extruded into a butterfly cable. During the extrusion process, the temperature of the extrusion die 3 will increase due to the high temperature of the extruder 4 and the sheath material. Due to the thermal expansion coefficient of the mold core 32 and the outer mold 31 Smaller than the thermal expansion coefficient of the sealing block 35, the sealing block 35 further tightens the extrusion hole 39 and the outlet hole 310, so that the extrusion hole 39 and the outlet hole 310 are completely sealed to avoid leakage of the sheath material. Through the extrusion control device, it can Control the number of bowtie cables produced simultaneously.

Further, the cross-section of the mold core 32 is rectangular, and one end of the mold core 32 is wedge-shaped with a thinner upper and lower thickness, the opening 33 on the outer mold 31 is a wedge-shaped hole, and one end of the mold core 32 is wedge-shaped. The upper and lower surfaces of the upper and lower surfaces of the opening 33 cooperate to form two flow channels 38, and the two flow channels 38 meet in the gap between the outlet hole 310 and the extrusion hole 39, and the outer mold 31- The side is provided with feed inlet 34, and described feed inlet 34 communicates with two described runners 38, and described feed inlet 34 is connected with the discharge port of described extruder 4, and described mold core 32 wedge-shaped one end The surfaces on both sides are attached to the surfaces on both sides of the opening 33, so that the sheath material can only enter the extrusion hole 39 through two upper and lower flow channels 38, and the mold core 32 is provided with a square flange, and the mold core 32 passes through The square flange is connected to the outer mold 31, and multiple groups of extrusion holes 39 are arranged horizontally. When the optical fibers and reinforcements enter the extrusion holes 39, they are also arranged horizontally. During production, the sheath material only enters the extrusion holes 39 Generating up and down pressure on the reinforcement, because there is no shielding on the top and bottom of the reinforcement, the pressure on the top and bottom of the reinforcement is balanced, so that the reinforcement will not be displaced during the extrusion process, which improves the quality of the butterfly optical fiber and prevents the reinforcement from being damaged. The unbalanced pressure squeezed into contact with the extrusion hole 39 causes excessive wear of the extrusion hole 39 .

Further, a set of outlet holes 310 includes two reinforcement holes 3102 and an optical fiber hole 3101 arranged at the center of the two reinforcements, the optical fiber and the reinforcement are respectively positioned through the fiber holes 3101 and the reinforcement holes 3102 and enter the extrusion hole In 39, the extrusion precision is improved.

Further, the included angle between the flow channel 38 and the outlet hole 310 is 30°-45°, and an acute angle is formed between the flow channel 38 and the outlet hole 310. Due to the setting of the multi-extrusion hole 39, the device can simultaneously When extruding multiple butterfly-shaped optical cables, greater extrusion pressure is required, and the acute angle between the flow channel 38 and the outlet hole 310 can increase the extrusion pressure.

Further, the pay-off mechanism 2 includes a pay-off roller bracket 21 and a pay-off roller 22, two of the pay-off rollers 22 are arranged up and down in rolling contact and rotated on the pay-off roller bracket 21, and the two The rolling contact of the pay-off roller 22 and the outlet hole 310 are located on the same horizontal plane, and the pay-off roller 22 is provided with multiple sets of positioning grooves 24 surrounding the pay-off roller 22, and the positions of the positioning grooves 24 are in line with the outlet holes. 310 one-to-one correspondence, wherein the pay-off roller bracket 21 is provided with a positioning roller drive motor, and the power output shaft of the positioning roller driving motor is connected to one of the positioning rollers. Due to the rolling contact of the two positioning rollers, the two positioning rollers Both can be driven, and the two positioning rollers press the optical fiber and the reinforcing member in the positioning groove 24 for positioning and pull the optical fiber and the reinforcing member, so that the optical fiber and the reinforcing member are aligned with the outlet hole 310 on the mold core 32 .

Further, the positioning groove 24 includes two strengthening member positioning grooves 241 and an optical fiber positioning groove 242 located in the center of the two strengthening member positioning grooves 241, the strengthening member positioning groove 241 and the optical fiber positioning groove 242 can make the strengthening member and optical fiber arrangement Accurate, neatly positioned, aligned with the reinforcement hole 3102 and the fiber hole 3101 on the mold core 32 .

Further, the cooling and drying mechanism 6 includes a cooling spray head 53, a water pipe 52, a water tank 51 and a drying mechanism 6, and a plurality of the water pipes 52 connect the bottom of the water tank 51 and cross the top of the water tank 51, each The position where the water pipe 52 crosses the top of the water tank 51 is connected with a shower head 53, the cooling shower head 53 is aligned with the butterfly cable, the water tank 51 is provided with a water pump, and the water pump is connected to the water pipe 52 to cool the water in the water tank 51. The water is transported into the water pipe 52 and then sprayed out through the spray head 53. The spray head 53 can spray cooling water to the butterfly optical cable to cool and shape the butterfly optical cable.

Further, the drying mechanism 6 includes a drying box 61, a fan 63 and a heating pipe 64, the drying box 61 is arranged at the tail end of the water tank 51, and both ends of the drying box 61 are provided with wire hole 62, a heating pipe 64 is arranged in the drying box 61, fans 63 are arranged on both sides of the drying box 61, and the fan 63 communicates with the inside and outside of the drying box 61, and the optical fiber enters through the wire hole 62 and out of the drying box 61, the heating pipe 64 in the drying box 61 dries the butterfly optical cable, and the fan 63 assists in blowing off the cooling water on the butterfly optical cable and takes out the humid air in the drying box 61, Aids in drying.

Further, the traction device 7 includes an upper conveyor belt 72 and a lower conveyor belt 72, the bottom surface of the upper conveyor belt 72 is attached to the top surface of the lower conveyor belt 72, and the conveying surfaces of the upper conveyor belt 72 and the lower conveyor belt 72 are both Corresponding to the outlet hole 310 is provided with a plurality of traction grooves 74, the conveyor belt 72 is installed on the traction device mounting frame 71, the traction device mounting frame 71 is provided with a conveyor belt driving motor 73, the power output shaft of the transmission belt driving motor is connected to the The lower conveyor belt 72 is connected by transmission. Since the upper conveyor belt 72 and the lower conveyor belt 72 fit together, both the upper conveyor belt 72 and the lower conveyor belt 72 are driven, and the butterfly optical cable is pressed between the traction grooves 74, so that the butterfly optical cable is pulled and tightened. .

Further, it also includes an online drying device, which is arranged before the pay-off mechanism 2 to dry the optical fiber before the cable is extruded, which includes two heating plates 11 and a heating plate support 12, The heating plate 11 is arranged on the support, the two heating plates 11 are arranged horizontally, there is a gap between the two heating plates 11, and the gap between the two heating plates 11 is connected with the outlet hole 310 is located at the same level. The online drying device avoids the phenomenon that the optical fiber and the sheath are not firmly bonded due to moisture caused by the optical fiber being placed for a long time, and the optical fiber is stretched when the butterfly cable is bent. The optical fiber is heated from two heating plates 11 Pass between them to pre-dry the fiber before extrusion.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the above-mentioned technical content to make many possible changes and modifications to the technical solution of the present invention, or modify it into equivalent embodiments of equivalent changes . Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention that do not deviate from the technical solution of the present invention belong to the protection scope of the technical solution.

Claims (10)

1. The utility model provides a butterfly-shaped optical cable apparatus for producing which characterized in that: the butterfly-shaped optical cable production device comprises a pay-off mechanism (2), an extrusion mechanism, a cooling and drying mechanism (6) and a traction device (7) which are sequentially arranged, wherein the extrusion mechanism comprises an extruder (4) and an extrusion die (3), and the extrusion die (3) is arranged at the head of the extruder (4);

the extrusion die (3) comprises an outer die (31) and a die core (32), a plurality of groups of wire outlet holes (310) are formed in the die core (32) in a manner of axially penetrating through the die core (32) along a central shaft, one end of the outer die (31) is provided with a hole (33), one end of each wire outlet hole (310) of the die core (32) is arranged in the hole (33), a plurality of extrusion holes (39) are formed in the outer die (31) corresponding to the plurality of groups of wire outlet holes (310), and gaps are formed between the extrusion holes (39) and the wire outlet holes (310); the extrusion die (3) further comprises an extrusion control device, the extrusion control device comprises sealing blocks (35) and a screw (36), two sides of the outer die (31) are respectively provided with a sealing block moving hole (351), the sealing block moving holes (351) and the extrusion holes (39) are located on the same horizontal plane and are perpendicular to each other, the sealing block moving holes (351) are communicated with a gap between the wire outlet (310) and the extrusion holes (39), the two sealing blocks (35) are respectively arranged in the two sealing block moving holes (351) in a sliding mode, one end of each sealing block (35) is rotatably connected with the screw (36), the screw (36) is in threaded connection with the opening of each sealing block moving hole (351), and one end of the screw (36) is provided with a hand wheel (37).

2. The butterfly-shaped optical cable production device of claim 1, wherein: the cross-section of mold core (32) is the rectangle, mold core (32) one end is the wedge of upper and lower thickness attenuation, on external mold (31) trompil (33) are the wedge hole, the upper and lower surface of mold core (32) wedge one end with the cooperation of the upper and lower surface of trompil (33) forms two runners (38), two runner (38) intersect in wire hole (310) and the clearance department of extruding between hole (39), external mold (31) one side is provided with feed inlet (34), feed inlet (34) intercommunication two runner (38).

3. The butterfly-shaped optical cable production device of claim 2, wherein: the included angle between the flow channel (38) and the wire outlet hole (310) is 30-45 degrees.

4. The butterfly-shaped optical cable production device of claim 1, wherein: one set of the outlet holes (310) includes two strength member holes (3102) and a fiber hole (3101) centrally located in both strength members.

5. The butterfly-shaped optical cable production device of claim 1, wherein: pay off mechanism (2) are including paying out roller support (21) and paying out roller (22), two pay out roller (22) arrange from top to bottom rolling contact and rotate set up in on paying out roller support (21), two pay out roller (22) rolling contact department with wire hole (310) are located same horizontal plane, be provided with multiunit constant head tank (24) on paying out roller (22).

6. The butterfly-shaped optical cable production device of claim 5, wherein: the positioning grooves (24) comprise two reinforcing member positioning grooves (241) and an optical fiber positioning groove (242) located in the center of the two reinforcing member positioning grooves (241).

7. The butterfly-shaped optical cable production device of claim 1, wherein: the cooling and drying mechanism (6) comprises a cooling spray header (53), water pipes (52), a water tank (51) and a drying mechanism (6), wherein the water pipes (52) are connected with the bottom of the water tank (51) and stretch across the top of the water tank (51), each water pipe (52) stretches across the top of the water tank (51) and is connected with the spray header (53), and the drying mechanism (6) is arranged at the tail of the water tank (51).

8. The butterfly-shaped optical cable production device of claim 7, wherein: drying mechanism (6) are including stoving case (61), fan (63) and heating pipe (64), stoving case (61) set up in basin (51) tail end, stoving case (61) both ends all are provided with line hole (62), be provided with heating pipe (64) in stoving case (61), stoving case (61) both sides all are provided with fan (63), fan (63) intercommunication stoving case (61) inside and outside.

9. The butterfly-shaped optical cable production device of claim 1, wherein: the traction device (7) comprises an upper conveyor belt (72) and a lower conveyor belt (72), the bottom surface of the upper conveyor belt (72) is attached to the top surface of the lower conveyor belt (72), and traction grooves (74) are formed in the conveying surfaces of the upper conveyor belt (72) and the lower conveyor belt (72) corresponding to the wire outlet holes (310).

10. The butterfly-shaped optical cable production device of claim 1, wherein: still include online drying device, online drying device set up in be used for before optical cable extrusion drying optical fiber before paying out machine constructs (2), it includes two hot plate (11) and hot plate support (12), hot plate (11) set up in on the support, two hot plate (11) level sets up, two have the clearance between hot plate (11), two clearance between hot plate (11) with wire hole (310) are located same horizontal plane.

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